Locomotive driving box



Dec- 29, 1942- v J. B. swAN 2,306,916

. LocoMoTIvE DRivING Box Filed' May 9, 1941 77 13 Jo/m/ SWA 1V.

Patented Dec. 29, 1942 par sa@ esta' LoooMo'rIvn DRIV'IN'G Box .Fhn 1?".V Swan, Gladstone, Mich., assigner of onehalf to" Glennv W. Jackson, Gladstone, Mich., and Richard W. Nebel, Munising, Mich.

Appiicationmay 9, 1941, serial No. 392,816

Aoriginal-Wedge which is generallyinuse: at 'this time upon the older locomotives', and any improvements that have been made by separate wedges.

The diiiiculty experienced with wedges has been that the Icontinuous, up and downhmotion causes wear ofthe lcircular slot or aperture in the face of the wedge, causing this slot to become enlarged vertically an-d this results in a hammering upon the Wedge bolt, which eventually breaks the wedge bolt, releasing the adjustment.

Therefore, an object of this invention is the construction of a novel and eiiicient wedge bolt device which can be quickly adjusted to take up the wear, whereby the life of the device will be greatly increased, as well as a very eicient assembly of the units will be accomplished.

Another object of the invention is the construction of simple and ehi-cient, as well as novel means, for adjusting the Wedge as Wear occurs to eliminate hammering and breaking of the device.

With the foregoing and other objects in view the invention comprises certain novel constructions, combinations, and arrangements of parts as will be hereinafter fully described, illustrated in the accompanying drawing, and more particularly f- Figure 5 is a perspective view of the wedge bolt device.

Figure 6 is a perspective view of the wedge. Figure 7 is a sectional view taken on line 1 1, Figure 1, and looking in the direction of the Referring tothe drawing by numerals, I designates a frame, which comprises a support for the wedge and the wedge bolt device, hereinafter specincally described. The frame I comprises a primary section 2 and an auxiliary section 3.

Within the frame I is a shoe 5 and a shoe G.

A box 'l is within the frame in engagement with said` shoes. An angle bracket 4 is fastened tothe louter face of the auxiliary section 3, Fig. l.

The Wedge bolt device comprises a hollow primary externally and internally threaded bolt 8 into which is threaded an auxiliary bolt 9. Bolt 8 is placed in position on section 3, before sections 2 and 3 are fastened together. A plunger I0 is slidably mounted in the semi-cylindrical head II and .the inner end of primary bolt8. A semi' cylindrical head I2 is integral with the outer end of plunger I0. Head II is integral with the inner end of said bolt 8 and said head II has no adjustment after the parts are assembled. Wedge I3 is provided with an aperture I4 near its outer end, and with a slot I5 opening upon said aperture I4. The heads II and I2 are normally in aperture I4 with the primary bolt 8 extending through slot I5. The primary bolt 8 also extends through the angle bracket 4, when the wedge bolt device is in position upon the box I. The wedge I3 is in engagement with the under face of shoe 5,V and by maintaining a tight t of the wedge I3 against shoe 5 the bearing 'l and shoe 6 are also kept in a tight and efficient position upon the frame I. A lock nut I6 is on the threaded external surface of the primary bolt 8, and normally presses against the inner face of bracket 4. A lock nut I'I is also on the primary bolt 8, pressing against the outer face of angle bracket 4. A third lock nut I8 is on the externally threaded surface of the auxiliary bolt 9; this nut I8 bearing against the outer end of the primary bolt 8, when the device is locked or normally positioned.

As wear occurs on parts I4 and I5 of the wedge I3, the operator can loosen the lock nut I8, screw inwardly upon the auxiliary bolt 9 which will result in the bolt pushing at its inner end against the inner end of the sliding plunger I0, whereupon head I2 is forced outwardly, thereby tightening` the head against the wedge I3, forcing a very tight action on the part of the cooperating units.

It is to be understood that when Wear occurs in the aperture I4 and slot I5, this Wear is vertical, and by my invention I take up the Wear, so t0 speak, by the novel heads I I and I2 and their actuating elements. By my invention all of the play is taken up, caused by the wear of the up and down motion of the Wedge bolt. In other words, when the engineer sets up this bolt device for adjusting the wedge to accommodate the wear on the surface, at the same time he can set up the top of the wedge bolt head, so as to take up any wear that has occurred within the Wedge bolt head, so as to take up also any wear that has occurred within the wedge bolt slot or aperture.

Oiling apertures I9 are formed in the side of the hollow axle box 'I and apertures 20 are formed in the top and bottom portions of said axle box (Fig. 7). This enables the operator to oil the surface of the shoes.

It is to be noted that an -accurate adjustment of the Wedge I3 and the cooperating wedge bolt device can be obtained upon the frame l because the primary bolt is easily placed in the position shown in Figure 1, with the auxiliary bolt and the head-carrying plunger, supported by the primary bolt, whereupon the loosening of the lock nuts can be quickly accomplished, the bolts adjusted to a nicety and then the lock nuts tightened for retaining the entire structure in its accurate assembled position. f

While I have -described the preferred embodi ment of my invention and illustrated the'same in the accompanying drawing, certain changes or alterations may appear to one skilled in the art to which this invention relates during the extensive manufactureY of the same, and, I therefore, reserve the right to make such changes or device, and said wedge having an aperture in which said heads are seated: said wedge bolt device being provided with means for urging said heads apart within said aperture, whereby said heads press upon opposite portions of said wedge within said aperture.

2. In a locomotive driving box having a wedge for receiving two heads at an end of a wedge bolt device, and said wedge having anV aperture in which said heads are seated; said wedge bolt device comprising a bolt provided with one of said heads, a slidable plunger extending into said bolt and being provided with one of said heads, and manually operated means carried by said bolt and engaging said slidable plunger for urging said heads apart within the aperture of said wedge.

3. In a locomotive driving box having a wedge for receiving two heads at an end of a wedge bolt device, and said wedge having an aperture in which said heads are seated said wedge bolt device comprising an internally and an externally threaded primary bolt having -one of said heads, an auxiliary bolt threaded into said primary bolt, a plunger provided with one of said heads, said plunger extending into said primary bolt and having its inner end normally against said auxiliary bolt, whereby when saidauxiliary bolt is rotated in one direction said heads will be urged apart within said aperture.

JOHN B. SWAN. 

